1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/io.h>
#include <mach/board.h>
#define MICRO_SUPPORT_CARD_RESET \
((CONFIG_SUPPORT_CARD_BASE) + 0x000D0034)
#define MICRO_SUPPORT_CARD_REVISION \
((CONFIG_SUPPORT_CARD_BASE) + 0x000D00E0)
/*
* 0: reset deassert, 1: reset
*
* bit[0]: LAN, I2C, LED
* bit[1]: UART
*/
void support_card_reset_deassert(void)
{
writel(0, MICRO_SUPPORT_CARD_RESET);
}
void support_card_reset(void)
{
writel(3, MICRO_SUPPORT_CARD_RESET);
}
static int support_card_show_revision(void)
{
u32 revision;
revision = readl(MICRO_SUPPORT_CARD_REVISION);
printf("(CPLD version %d.%d)\n", revision >> 4, revision & 0xf);
return 0;
}
int check_support_card(void)
{
printf("SC: Micro Support Card ");
return support_card_show_revision();
}
void support_card_init(void)
{
/*
* After power on, we need to keep the LAN controller in reset state
* for a while. (200 usec)
* Fortunately, enough wait time is already inserted in pll_init()
* function. So we do not have to wait here.
*/
support_card_reset_deassert();
}
#if defined(CONFIG_SMC911X)
#include <netdev.h>
int board_eth_init(bd_t *bis)
{
return smc911x_initialize(0, CONFIG_SMC911X_BASE);
}
#endif
#if !defined(CONFIG_SYS_NO_FLASH)
#include <mtd/cfi_flash.h>
#include <mach/sbc-regs.h>
struct memory_bank {
phys_addr_t base;
unsigned long size;
};
static int mem_is_flash(const struct memory_bank *mem)
{
const int loop = 128;
u32 *scratch_addr;
u32 saved_value;
int ret = 1;
int i;
/* just in case, use the tail of the memory bank */
scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop,
sizeof(u32) * loop, MAP_NOCACHE);
for (i = 0; i < loop; i++, scratch_addr++) {
saved_value = readl(scratch_addr);
writel(~saved_value, scratch_addr);
if (readl(scratch_addr) != saved_value) {
/* We assume no memory or SRAM here. */
writel(saved_value, scratch_addr);
ret = 0;
break;
}
}
unmap_physmem(scratch_addr, MAP_NOCACHE);
return ret;
}
/* {address, size} */
static const struct memory_bank memory_banks[] = {
{0x42000000, 0x01f00000},
};
static const struct memory_bank
*flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT];
phys_addr_t cfi_flash_bank_addr(int i)
{
return flash_banks_list[i]->base;
}
unsigned long cfi_flash_bank_size(int i)
{
return flash_banks_list[i]->size;
}
static void detect_num_flash_banks(void)
{
const struct memory_bank *memory_bank, *end;
cfi_flash_num_flash_banks = 0;
memory_bank = memory_banks;
end = memory_bank + ARRAY_SIZE(memory_banks);
for (; memory_bank < end; memory_bank++) {
if (cfi_flash_num_flash_banks >=
CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
break;
if (mem_is_flash(memory_bank)) {
flash_banks_list[cfi_flash_num_flash_banks] =
memory_bank;
debug("flash bank found: base = 0x%lx, size = 0x%lx\n",
memory_bank->base, memory_bank->size);
cfi_flash_num_flash_banks++;
}
}
debug("number of flash banks: %d\n", cfi_flash_num_flash_banks);
}
#else /* CONFIG_SYS_NO_FLASH */
void detect_num_flash_banks(void)
{
};
#endif /* CONFIG_SYS_NO_FLASH */
void support_card_late_init(void)
{
detect_num_flash_banks();
}
|
